Bernie Boston, a newspaper photographer best known for his iconic 1960s picture of a Vietnam War protester placing flowers in soldiers' gun barrels at an anti-war rally, has died. He was 74.

Boston died Tuesday from a rare blood disease at his home in Basye, where he had retired in 1994 after working for The Los Angeles Times, The Washington Star and the Dayton Daily News. His death was announced by the White House News Photographers Association, where he served four terms as president.